As the moon revolves around the Earth the illuminated side of the moon is not always visible from Earth - this develops the phases of the moon

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The Moon

• As the moon revolves around the Earth the
  illuminated side of the moon is not always
  visible from Earth - this develops the phases
  of the moon

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• The moon orbits once around the Earth
• in 27.3 days ( almost 1 month)
• The moon rotates on its axis every 27.3 days.
• We always see the same face of the moon
• The moon causes the tides on Earth

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Spring tides are especially strong tides (they do
not have anything to do with the season Spring).
They occur when the Earth, the Sun, and the Moon
are in a line. The gravitational forces of the
Moon and the Sun both contribute to the tides.
Spring tides occur during the full moon and the
new moon. Neap tides are especially weak tides.
They occur when the gravitational forces of the
Moon and the Sun are perpendicular to one another
(with respect to the Earth). Neap tides occur
during quarter moo
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An eclipse is when one object in space blocks the
light of anotherA solar eclipse
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Solar eclipse is when the sun gets blocked by
the moon

• (sun moon earth)
• Must be in the new moon phase

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A lunar eclipse
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Lunar eclipse

• A lunar eclipse is when the sunlight hitting the
  moon gets blocked by the Earth
• Must be in the full moon phase
• Sun - Earth - moon position

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• Astronaut Buzz Aldrin photographed by Neil
  Armstrong during the first moon landing on 20
  July 1969.